Update rules

src/index.ts

@@ -50,6 +50,8 @@ export interface LocalRuleOptions {
   'custom/restrict-template-expressions': RuleEntry<{ allow: string[] }>;
   /** Ban assignment of empty object literals `{}` and replace them with `Object.create(null)` */
   'custom/no-empty-object-literal': RuleEntry<unknown>;
+  /** Ban useless import alias */
+  'custom/no-useless-import-alias': RuleEntry<unknown>;
 }
 
 export type RuleOptions = Rules & Partial<LocalRuleOptions>;
@@ -76,6 +78,8 @@ export type InputConfig = Omit<ESLintConfig, 'rules'> & {
    * Glob pattern to find paths to custom rule files in JavaScript or TypeScript.
    * Note this must be a string literal or an array of string literals since
    * this is statically analyzed.
+   *
+   * Rules are prefixed with `custom/` and the file name is used as the rule name.
    */
   customRuleFiles?: string | string[];
 
@@ -161,7 +165,7 @@ export function extendConfig(
       { files: ['repl.ts', 'scripts/**/*.ts'], rules: { 'no-console': off } },
       ...(overrides ?? []),
     ],
-    rules: { ...eslintRules, ...rules },
+    rules: { ...eslintRules },
     ...rest,
   };
 
@@ -181,5 +185,7 @@ export function extendConfig(
   result.plugins = unique(result.plugins);
   result.extends = unique(result.extends);
 
+  Object.assign(result.rules, rules);
+
   return result;
 }